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qemu/accel/kvm/trace-events

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docs: fix references to docs/devel/tracing.rst Commit e50caf4a5c ("tracing: convert documentation to rST") converted docs/devel/tracing.txt to docs/devel/tracing.rst. We still have several references to the old file, so let's fix them with the following command: sed -i s/tracing.txt/tracing.rst/ $(git grep -l docs/devel/tracing.txt) Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210517151702.109066-2-sgarzare@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2021-05-17 17:16:58 +02:00
# See docs/devel/tracing.rst for syntax documentation.
accel: move kvm related accelerator files into accel/ move kvm related accelerator files into accel/ subdirectory, also create one stub subdirectory, which will include accelerator's stub files. Signed-off-by: Yang Zhong <yang.zhong@intel.com> Message-Id: <1496383606-18060-5-git-send-email-yang.zhong@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-06-02 14:06:46 +08:00
# kvm-all.c
kvm_ioctl(int type, void *arg) "type 0x%x, arg %p"
kvm_vm_ioctl(int type, void *arg) "type 0x%x, arg %p"
kvm_vcpu_ioctl(int cpu_index, int type, void *arg) "cpu_index %d, type 0x%x, arg %p"
kvm_run_exit(int cpu_index, uint32_t reason) "cpu_index %d, reason %d"
kvm_device_ioctl(int fd, int type, void *arg) "dev fd %d, type 0x%x, arg %p"
kvm_failed_reg_get(uint64_t id, const char *msg) "Warning: Unable to retrieve ONEREG %" PRIu64 " from KVM: %s"
kvm_failed_reg_set(uint64_t id, const char *msg) "Warning: Unable to set ONEREG %" PRIu64 " to KVM: %s"
kvm: kvm_init_vcpu take Error pointer Clean up the error handling in kvm_init_vcpu so we can see what went wrong more easily. Make it take an Error ** and fill it out with what failed, including the cpu id, so you can tell if it only fails at a given ID. Replace the remaining DPRINTF by a trace. This turns a: kvm_init_vcpu failed: Invalid argument into: kvm_init_vcpu: kvm_get_vcpu failed (256): Invalid argument and with the trace you then get to see: 19049@1595520414.310107:kvm_init_vcpu index: 169 id: 212 19050@1595520414.310635:kvm_init_vcpu index: 170 id: 256 qemu-system-x86_64: kvm_init_vcpu: kvm_get_vcpu failed (256): Invalid argument which makes stuff a lot more obvious. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200723160915.129069-1-dgilbert@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-07-23 17:09:15 +01:00
kvm_init_vcpu(int cpu_index, unsigned long arch_cpu_id) "index: %d id: %lu"
accel/kvm: Extract common KVM vCPU {creation,parking} code KVM vCPU creation is done once during the vCPU realization when Qemu vCPU thread is spawned. This is common to all the architectures as of now. Hot-unplug of vCPU results in destruction of the vCPU object in QOM but the corresponding KVM vCPU object in the Host KVM is not destroyed as KVM doesn't support vCPU removal. Therefore, its representative KVM vCPU object/context in Qemu is parked. Refactor architecture common logic so that some APIs could be reused by vCPU Hotplug code of some architectures likes ARM, Loongson etc. Update new/old APIs with trace events. New APIs qemu_{create,park,unpark}_vcpu() can be externally called. No functional change is intended here. Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Xianglai Li <lixianglai@loongson.cn> Tested-by: Miguel Luis <miguel.luis@oracle.com> Reviewed-by: Shaoqin Huang <shahuang@redhat.com> Reviewed-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Tested-by: Zhao Liu <zhao1.liu@intel.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <20240716111502.202344-2-salil.mehta@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-07-16 12:14:56 +01:00
kvm_create_vcpu(int cpu_index, unsigned long arch_cpu_id, int kvm_fd) "index: %d, id: %lu, kvm fd: %d"
kvm_destroy_vcpu(int cpu_index, unsigned long arch_cpu_id) "index: %d id: %lu"
kvm_park_vcpu(int cpu_index, unsigned long arch_cpu_id) "index: %d id: %lu"
kvm_unpark_vcpu(unsigned long arch_cpu_id, const char *msg) "id: %lu %s"
accel: move kvm related accelerator files into accel/ move kvm related accelerator files into accel/ subdirectory, also create one stub subdirectory, which will include accelerator's stub files. Signed-off-by: Yang Zhong <yang.zhong@intel.com> Message-Id: <1496383606-18060-5-git-send-email-yang.zhong@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-06-02 14:06:46 +08:00
kvm_irqchip_commit_routes(void) ""
kvm_irqchip_add_msi_route(char *name, int vector, int virq) "dev %s vector %d virq %d"
kvm_irqchip_update_msi_route(int virq) "Updating MSI route virq=%d"
kvm_irqchip_release_virq(int virq) "virq %d"
kvm: Add kvm_set_ioeventfd* traces Add a couple of traces around the kvm_set_ioeventfd* calls. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-Id: <20190212134758.10514-4-dgilbert@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-02-12 13:47:57 +00:00
kvm_set_ioeventfd_mmio(int fd, uint64_t addr, uint32_t val, bool assign, uint32_t size, bool datamatch) "fd: %d @0x%" PRIx64 " val=0x%x assign: %d size: %d match: %d"
kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint32_t val, bool assign, uint32_t size, bool datamatch) "fd: %d @0x%x val=0x%x assign: %d size: %d match: %d"
kvm: Enable KVM_SET_USER_MEMORY_REGION2 for memslot Switch to KVM_SET_USER_MEMORY_REGION2 when supported by KVM. With KVM_SET_USER_MEMORY_REGION2, QEMU can set up memory region that backend'ed both by hva-based shared memory and guest memfd based private memory. Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com> Co-developed-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Message-ID: <20240320083945.991426-10-michael.roth@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-03-20 03:39:05 -05:00
kvm_set_user_memory(uint16_t as, uint16_t slot, uint32_t flags, uint64_t guest_phys_addr, uint64_t memory_size, uint64_t userspace_addr, uint32_t fd, uint64_t fd_offset, int ret) "AddrSpace#%d Slot#%d flags=0x%x gpa=0x%"PRIx64 " size=0x%"PRIx64 " ua=0x%"PRIx64 " guest_memfd=%d" " guest_memfd_offset=0x%" PRIx64 " ret=%d"
kvm: Support KVM_CLEAR_DIRTY_LOG Firstly detect the interface using KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2 and mark it. When failed to enable the new feature we'll fall back to the old sync. Provide the log_clear() hook for the memory listeners for both address spaces of KVM (normal system memory, and SMM) and deliever the clear message to kernel. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20190603065056.25211-11-peterx@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2019-06-03 14:50:55 +08:00
kvm_clear_dirty_log(uint32_t slot, uint64_t start, uint32_t size) "slot#%"PRId32" start 0x%"PRIx64" size 0x%"PRIx32
KVM: Kick resamplefd for split kernel irqchip This is majorly only for X86 because that's the only one that supports split irqchip for now. When the irqchip is split, we face a dilemma that KVM irqfd will be enabled, however the slow irqchip is still running in the userspace. It means that the resamplefd in the kernel irqfds won't take any effect and it will miss to ack INTx interrupts on EOIs. One example is split irqchip with VFIO INTx, which will break if we use the VFIO INTx fast path. This patch can potentially supports the VFIO fast path again for INTx, that the IRQ delivery will still use the fast path, while we don't need to trap MMIOs in QEMU for the device to emulate the EIOs (see the callers of vfio_eoi() hook). However the EOI of the INTx will still need to be done from the userspace by caching all the resamplefds in QEMU and kick properly for IOAPIC EOI broadcast. This is tricky because in this case the userspace ioapic irr & remote-irr will be bypassed. However such a change will greatly boost performance for assigned devices using INTx irqs (TCP_RR boosts 46% after this patch applied). When the userspace is responsible for the resamplefd kickup, don't register it on the kvm_irqfd anymore, because on newer kernels (after commit 654f1f13ea56, 5.2+) the KVM_IRQFD will fail if with both split irqchip and resamplefd. This will make sure that the fast path will work for all supported kernels. https://patchwork.kernel.org/patch/10738541/#22609933 Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20200318145204.74483-5-peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-03-18 10:52:03 -04:00
kvm_resample_fd_notify(int gsi) "gsi %d"
KVM: Dirty ring support KVM dirty ring is a new interface to pass over dirty bits from kernel to the userspace. Instead of using a bitmap for each memory region, the dirty ring contains an array of dirtied GPAs to fetch (in the form of offset in slots). For each vcpu there will be one dirty ring that binds to it. kvm_dirty_ring_reap() is the major function to collect dirty rings. It can be called either by a standalone reaper thread that runs in the background, collecting dirty pages for the whole VM. It can also be called directly by any thread that has BQL taken. Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20210506160549.130416-11-peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-05-17 04:23:50 -04:00
kvm_dirty_ring_full(int id) "vcpu %d"
kvm_dirty_ring_reap_vcpu(int id) "vcpu %d"
kvm_dirty_ring_page(int vcpu, uint32_t slot, uint64_t offset) "vcpu %d fetch %"PRIu32" offset 0x%"PRIx64
kvm_dirty_ring_reaper(const char *s) "%s"
kvm_dirty_ring_reap(uint64_t count, int64_t t) "reaped %"PRIu64" pages (took %"PRIi64" us)"
kvm_dirty_ring_reaper_kick(const char *reason) "%s"
kvm_dirty_ring_flush(int finished) "%d"
accel/kvm: Turn DPRINTF macro use into tracepoints Patch removes DPRINTF macro and adds multiple tracepoints to capture different kvm events. We also drop the DPRINTFs that don't add any additional information than trace_kvm_run_exit already does. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1827 Signed-off-by: Jai Arora <arorajai2798@gmail.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2023-12-02 10:18:46 +05:30
kvm_failed_get_vcpu_mmap_size(void) ""
kvm_cpu_exec(void) ""
kvm_interrupt_exit_request(void) ""
kvm_io_window_exit(void) ""
kvm_run_exit_system_event(int cpu_index, uint32_t event_type) "cpu_index %d, system_even_type %"PRIu32
kvm: handle KVM_EXIT_MEMORY_FAULT Upon an KVM_EXIT_MEMORY_FAULT exit, userspace needs to do the memory conversion on the RAMBlock to turn the memory into desired attribute, switching between private and shared. Currently only KVM_MEMORY_EXIT_FLAG_PRIVATE in flags is valid when KVM_EXIT_MEMORY_FAULT happens. Note, KVM_EXIT_MEMORY_FAULT makes sense only when the RAMBlock has guest_memfd memory backend. Note, KVM_EXIT_MEMORY_FAULT returns with -EFAULT, so special handling is added. When page is converted from shared to private, the original shared memory can be discarded via ram_block_discard_range(). Note, shared memory can be discarded only when it's not back'ed by hugetlb because hugetlb is supposed to be pre-allocated and no need for discarding. Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com> Co-developed-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Message-ID: <20240320083945.991426-13-michael.roth@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-03-20 03:39:08 -05:00
kvm_convert_memory(uint64_t start, uint64_t size, const char *msg) "start 0x%" PRIx64 " size 0x%" PRIx64 " %s"
kvm_memory_fault(uint64_t start, uint64_t size, uint64_t flags) "start 0x%" PRIx64 " size 0x%" PRIx64 " flags 0x%" PRIx64
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